<?php

/**
 * OrangeHRM is a comprehensive Human Resource Management (HRM) System that captures
 * all the essential functionalities required for any enterprise.
 * Copyright (C) 2006 OrangeHRM Inc., http://www.orangehrm.com
 *
 * OrangeHRM is free software: you can redistribute it and/or modify it under the terms of
 * the GNU General Public License as published by the Free Software Foundation, either
 * version 3 of the License, or (at your option) any later version.
 *
 * OrangeHRM is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with OrangeHRM.
 * If not, see <https://www.gnu.org/licenses/>.
 */

namespace OrangeHRM\Pim\Dto\Traits;

use LogicException;
use OrangeHRM\Admin\Traits\Service\CompanyStructureServiceTrait;

trait SubunitIdChainTrait
{
    use CompanyStructureServiceTrait;

    /**
     * @var array
     */
    protected array $subunitIdChain = [];

    /**
     * @return array|null
     */
    public function getSubunitIdChain(): ?array
    {
        if (!method_exists($this, 'getSubunitId')) {
            throw new LogicException();
        }
        if (is_null($this->getSubunitId())) {
            return null;
        }
        $subunitId = $this->getSubunitId();
        if (!isset($this->subunitIdChain[$subunitId])) {
            $this->subunitIdChain[$subunitId] = $this->getCompanyStructureService()
                ->getSubunitChainById($this->getSubunitId());
        }

        return $this->subunitIdChain[$subunitId];
    }
}
